A packed house at New York’s Gramercy witnessed members of Slayer and Anthrax share the stage with Phil Anselmo, Gary Holt of Exodus and legendary bassist Billy Sheenan at the ‘Metal Masters 4‘ clinic. The evening started out with a stellar opening performance by Slayer drummer Dave Lomabardo‘s side project Philm, which also features frontman Gerry Nestler and bassist Pancho Tomaselli. The clinic itself began with Anthrax’s Frank Bello inviting kids